3A, 23V, 385KHz Step-Down Converter
The FP6189 is a buck regulator with a built-in internal power MOSFET. It can provide 3A
continuous output current over a wide input supply range with excellent load and line regulation.
Current mode operation provides fast transient response and eases loop stabilization. The device
includes cycle-by-cycle current limiting and thermal shutdown protection. Adjustable soft-start reduces
the stress on the input source during power-on. The regulator only consumes 20μA supply current in
shutdown mode. The FP6189 requires a minimum number of readily available external components to
complete a 3A buck regulator solution.
3A Output Current
0.1Ω Internal High Side Power MOSFET Switch
Stable with Low ESR Output Ceramic Capacitors
Up to 95% Efficiency
20μA Shutdown Mode Current
Fixed 385KHz Frequency
Cycle-by-Cycle Over Current Protection
Wide 4.75 to 23V Operating Input Range
Output Adjustable From 0.92V to 21V
Available SOP-8L (EP)
Under Voltage Lockout
Distributed Power Systems
Pre-Regulator for Linear Regulators
Typical Application Circuit
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